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plugins/muc/hats.lib.lua @ 12446:e54b8a5e35ad 0.12
util.random: Test whether util.crand works before using it (fix #1734)
util.crand can be configured at compile time to use the Linux
getrandom() system call, available from Linux 3.17, but it is still
possible to load it with an older kernel lacking that system call, where
attempting to use it throws an ENOSYS error.
By testing for this on load we can fall back to /dev/urandom in this
case.
author | Kim Alvefur <zash@zash.se> |
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date | Sat, 02 Apr 2022 16:33:27 +0200 (2022-04-02) |
parent | 11245:43b43e7156b8 |
child | 12977:74b9e05af71e |
rev | line source |
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1 local st = require "util.stanza"; |
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2 local muc_util = module:require "muc/util"; |
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3 |
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4 local xmlns_hats = "xmpp:prosody.im/protocol/hats:1"; |
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5 |
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6 -- Strip any hats claimed by the client (to prevent spoofing) |
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7 muc_util.add_filtered_namespace(xmlns_hats); |
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8 |
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9 |
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10 module:hook("muc-build-occupant-presence", function (event) |
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11 local bare_jid = event.occupant and event.occupant.bare_jid or event.bare_jid; |
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12 local aff_data = event.room:get_affiliation_data(bare_jid); |
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13 local hats = aff_data and aff_data.hats; |
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14 if not hats then return; end |
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15 local hats_el; |
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16 for hat_id, hat_data in pairs(hats) do |
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17 if hat_data.active then |
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18 if not hats_el then |
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19 hats_el = st.stanza("hats", { xmlns = xmlns_hats }); |
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20 end |
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21 hats_el:tag("hat", { uri = hat_id, title = hat_data.title }):up(); |
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22 end |
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23 end |
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24 if not hats_el then return; end |
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25 event.stanza:add_direct_child(hats_el); |
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26 end); |